Sole-trimming machine for boots and shoes



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B. `F. *WHEELER` SOLE TRIMMING MAHINEFOR BOTS SHOES. v No. 2519.253.- l APatenfcadJune.6, V.1.882.

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B. E. WHEELER..

SOLE TEIMMING MACHINE FOR BOOTS AND SHOES.

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UNITED lSTATESl PATENT vOFFICE.

-BENJAMIN F. WHEELER, OF MALDEN, MASSACHUSETTS.`

SL-E-TRIMMINGMACHINE FOR BOOTS AND SHOES.

SPECIFICATION forming' part of Letters Patent No. 259,253, dated June, 1882.

Application filed December 27, 1881. (No model.)

To all whom it may concern:

Be it known that I, BENJAMIN F. WHEELER, of Malden, in the county of Middlesex' and State of Massachusetts, have invented certain` new and useful Improvements in Sole-Trimming Machines for Boots and Shoes, of which the following, taken in connection with the ac-4 companying drawings, is a specification.

My invention relates to that class of soleedge-trimming machines in which the cuttingtool commonly called an ed ge-plaue is used 5 and it consists` in certain novel combinations and arrangements of devices for controlling the position ofthe bootv or shoe placed upon the jack and properly presenting the dierent parts of the sole-edge to the action of the cutting-knife, which will be best understood by reference tothe description of the drawings and to the claims to be hereinafter given.

Figure l of the drawings is a plan of a machine embodying my invention. Fig. 2 is a Fig. 3 is a sectional elevation ot' the upper portion of the machine,'drawn to an enlarged scale, the cutting-planebeing on line x .fr on Figs. l and 2.

Fig. 4:.is a vertical transverse section on line yly on Figs. 1 and 2, looking toward the rear end ofthe machine. Fig. 5 is an inverted plan, a portion of the head of the machine,'and the 3o jack-carrying carriage mounted thereon; and

Fig. 6 is a detail of the cam and lever for operating the jack-carriage.

A is a column provided with a broad base, A', and having secured toits upper end 'the frame B, lwhich extends horizontally to the rear of said column and upward and forward upon the opposite side ot' said column, as shown in'Fig. 1.

C is a worm-shaft mounted in bearingsgin the rear portion of the frame B, and ha'ving mounted thereon the two loose pulleys D and D', each having formed in its inner face a conical recess, a, to receive one of the'conical ends of the frictional clutch b, as shown in Fig. l.

The clutch b has Vformed iii'its periphery the circumferential groove b', with which pinsc o,.set in the forked. arm of the threearmed lever E, engage, so that by a vibratory movement of said lever said clutch may be moved endwise on the shaft C, while at the land 2. Theworm e upon the shaft C meshes into and imparts motion to they worm-wheel H, mounted upon the shalt I, which has its'bearings in the frame B, and carries upon one end the spur-gear wheel J and upon its opposite end the cam K. The gear-wheel J 'meshes into and imparts motion to the rack L, fitted .to slide in a suitable bearing formed for the purpose in the frame B, and carrying upon its upper side the stand M, in the upper end of which is formed a socket to yreceive the ball f, which is perforated to receive the rearend ofthe rod g, which is rinly secured to said ballV by the set-screw h, as shown in Fig. 7. The front end ofthe rod gis bent, as shown in Fig. 1, and hasformed thereinan eye orhole vto-receive'a hook, c', attached to the stock ot' theedge-plane N ina well-known manner.-

O is a carriage fitted to move horizontally on slides jj on theiunder side of the front po'rtion of the frame B, and connected by therd P to the upper endjof the lever Q, pivoted at k to the frame B, andV carrying at its lower end.

the stud l, which lits into and is acted upon by the path m of the c am K, as best shown in Fig. 6. The carriage O has fitted to suitable bearings formed therein the shaft S, to one end of which is firmly clamped by the nutn the jack T,'upon which the boot or sh'oeio be trimmed is placed, as shown in Figs. land 2. `The shaft S `has firmly secured thereon the spirally-grooved sleeve or pulley S', around which is wound the cord made preferably of rawhide, one end ot which is iirmly secured to the frame B at o, and the opposite end of which has securely'attached thereto the metal shank U', which is adjustably connected to the frame B at p' by means of va screw-thread cut upon said shank and the nut q, as shown in' Fig. 5, whereby said cord can beidra'wn taut, and any slack caused by the stretching of 'said cord may be taheu'up.` lt will be'seen that a'm'ovement of the carriage O alongtits slides j j will cause a partial rotation of the shaft S in one or the other direction, accortiing as the carriage is moved toward thc rear or the front of the machine.

The operation of my invention is as follows: The several parts of the machine being in the position shown in the drawings, and the boot or shoe being placed upon the jack, the operator takes the edge-plane N by the handle, as shown in Fig. 2, and holds it in the position shown upon the edge of the sole, and then places his foot upon the treadle G to depress it, which causes the friction-clutch b to engage with the pulley D, which is revolved by means of an open belt (not shown) leading therefrom to a pulley upon a suitable counter or driving shaft overhead, (but not sho\vn,) thereby causing the shafts C and I to revolve in the directions indicated by the arrows 1' and s, respectively. The revolution of the shaft I and the gear J in the direction of the arrow s causes the rack L, stand M, rod g, and edge-plane N to be moved toward the rear of the machine, the cutter being steadied and guided by the hand of the operator till the edge of the cutter arrives at a point on the shoe-sole edge about opposite the center of the curve of the toe, as indicated by the dotted line w at which time the point t in the path of the cam K will have arrived on a line with the center of the stud set in the lower end of the lever Q, when the continuation ot the revolution of said shaft I will cause the lever Q to be vibrated about its fulcrum, so as to move the carriage O toward the rear of the machine while that portion of the path of the cam K between the points t and u is passing the stud Zin the lower end of the lever Q,whioh rearward movement of the carriage() causes the shaft S to be turned about its axis to the extent of one-half ot a revolution, the jack T and the boot or shoe mounted thereon revolving therewith. /Vhen the jack and boot or shoe has made one-half of arevolution the motion of the carriage O ceases and the shoe is held stationary, while the motion of the knife or cutter continues along the edge of the sole till it reaches the rear portion of the shank of the boot or shoe, when the operator lifts the cutter away from the sole, and at the same time removes his foot from the treadle G, when the clutch b is releasedfrom contact with the pulleyD by the action of a spring or weight, (not shown,) so arranged and operated as to tend to hold said clutch in a position equidistant between the two pulleys D and D in a well-known manner.

The edge-plane N when notrequired for useas during the time of putting on and taking off the boot or shoe-is hung upon a wire or cord in a convenient position above the machine (but not shown) by means of the springhook o.

The jack T is of such a form and so secured to the shaft S that it revolves or vibrates about an axis coinciding with the axis ot' the shaft S, and with the center of curve of the rounded toe of the boot or shoe placed thereon; and

while the cutter is moving along the side of the sole-edge, which would be objectionable on account ot the increased difficulty of controlling the cutter, and hence the necessity for employing the movable carriage O, the cam for operating which should be so formed as to move said carriage toward the rear during the turning ot' the last a distance `ust sufticient to compensate for the backward motion of the edge of the toe portion of the sole, due to the rotation of said shoe about an axis coinciding with the center of the curve of said toe.

When the stroke of the edge-plane is completed and the operator removes his foot from the treadle G, it' he desires to trim another boot or shoe he places his foot upon the treadle G and depresses it, which causes the clutch b to engage with the pulley D', which is revolving in a direction opposite to that indicated by the arrow r and the edge-plane N, and the carriage 0 will be moved toward the front of the machine, and the shaft S and jack T will be revolved in the opposite direction till the parts assume the position shown in the drawings, when the operator removes his foot from the treadle G and the jack will remain at rest till the boot or shoe is removed and another one applied thereto.

What I claim as new, and desire to secure by Letters Patent of the United States, is-

1. The combination, in a sole-trimming machine, ot the jack T, the carriage O, mounted and adapted to be reciprocated upon suitable slides, the spirally-grooved pulley S, and the cord U, all constructed, arranged, and adapted to operate substantially as described.

2. In a sole-trimming machine, the combination of the reciprocating carriage '0, the shaft S, the spirally-grooved pulley S', the jack T, the cord U, the cam K, lever Q, and means of connecting the lever Q and the carriage O, substantially as and for the purposes described.

3. The combination of the movable carriage O, the spirally-grooved pulley S', the cord U, Wound around said pulley and rmly secured by one end to a xed portion of the machine, and the threaded shank U', secured to the opposite end of said cord and provided with the nut q, whereby the other end ot said cord may be secured to a flXed portion of the frame and any slack therein may be taken up, substantially as described.

IOO

4. The combination, in a sole-trimming ma;

chine, of an edge-plane, mechanism for imparting to said plane a. reciprocating motion, a. jack-carryingcarriage mounted upon slides, mechanism for' automaticallyimparting to said carriage an intermittent reciprocation in a. right line, and mechanism for imparting to the jack a semi-rotation during each forward or back- Ward stroke of said carriage, substantially as and for the purposes'described.

Executed at Boston, Massachusetts, this 22d 1o day of December, A. D. 1881.

. F. WHEELER.

Witnesses: I

E. A. HEMMENWAY, WALTER E. LOMBARD. 

